On 1/19/11 10:23 AM, Henrique de Moraes Holschuh wrote:
You're talking about 8TB of raw data. How much is all that data worth to
you?
Depends. 8TB of disks, but using raid 5 I figured it was more like 6 TB
of data. Some of that is movies, music, tv episodes etc. (back up of
iTunes libraries, so a lot of it cannot just be ripped again from the
original media, because it was purchased digitally). Some more of it
will probably be backup images from clonezilla of several machines on
the network. And some will be backuppc snapshots from other machines,
if I ever get that setup again.
Backups don't protect you well from slow, insiduous corruption (chances are
you will NOT have a backup from before the corruption when you finally
notice it) unless you have a strong retention policy, which I have never
seen anyone do at home.
Probably not. That would require even more media (and $$$) than most
people are willing to throw at the problem.
I'd go with the SAS setup. The Arecca cards have very good reputation
(although I haven't checked that specific card). I can't say anything about
the enclosure or the cable, other than that you should be careful with that
cable, and don't treat it harshly.
That particular Areca card seems to have very mixed reviews, on further
investigation. It has Linux drivers, but not many reviews had much good
to say about them.
Finding a non-RAID SAS HBA card that supports Linux, has an external
port or two to connect to an external drive array, and doesn't cost more
than the bloody drive enclosure (or the enclosure and a drive) and that
works 'out of the box' that someone will recommend via first-hand
experience (judging by reviews and such, support for cards among any one
brand or product line apparently varies wildly) is apparently asking too
much.
I'm somewhat inclined to go with option 'C': an HP Proliant Microserver
N36L - comes without OS (certified for RHEL5), 1GB ECC memory + 160gb
SATA drive. Move the OEM drive to the optical drive bay, stuff the four
HDD bays with 2TB drives and call it a day. A little more expensive
than the eSATA 4-bay drive enclosure, still a good bit cheaper than the
SAS/SATA 4-bay enclosure + SAS HBA card. Replaces the old desktop PC
'server' entirely.
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